One of the delights of retro Nintendo games is in discovering their secrets, little snippets of interesting features that can only be spotted with close attention. Hunting 'easter eggs' is a major part of retro gaming.

A current series on the Did You Know Gaming channel is looking to reveal intriguing details on all of the main series Mario games; always a popular subject. Some of these facts are pretty well known, but a few have been new to us — we're sure some of you already know them all, so please understand.

Learning about these quirky features or surprising cross-overs and references is always fun, so below you can see the first two parts of this video series; the first part was posted a couple of weeks ago, with part two arriving recently. They cover Super Mario Bros. right up to a few initial facts for Super Mario 64.

Let us know what you think, and share any cool easter eggs that have been missed out in the videos.

@GloverMistOh, it's just because I dislike his content. I tried getting into his videos, but they just weren't for me I guess. I just want to acknowledge that I feel that bias has some bearing on my opinion of these videos.

@unrandomsam
Because doing it that way would be a big mess and clutter up their channel along with peoples' subscription feeds. This is a two part series (so far), so you would just have what would have been 5-10min. videos broken up into 20-30 or so 10-20sec. ones. They're not all just "tricks" either. Doing it your way doesn't make sense from a practicality stand point.

Theres also the entertainment aspect, so its the difference between, say, watching the discovery and reading the magazine.

A few interesting facts there, although any of us long term Nintendo fans knew them all already, right?

Interesting point about the Chain Chomps originally being intended for Legend Of Zelda as one was featured in Zelda: Link's Awakening for Game Boy (with much more obvious references to it being like a dog) and the Super Mario Bros 2 end boss Wart also made a cameo in Link's Awakening under his original Japanese name of 'Mamu', whilst some other Super Mario Bros 2 enemies like Pokeys also appear at certain points. (Wart isn't an enemy in Link's Awakening though).